`histogram` for chart

Creates a new table with a histogram based on the column name passed in.

Signature

> histogram {flags} (column-name) (frequency-column-name)

Flags

--percentage-type, -t {string}: percentage calculate method, can be 'normalize' or 'relative', in 'normalize', defaults to be 'normalize'

Parameters

column-name: Column name to calc frequency, no need to provide if input is a list.
frequency-column-name: Histogram's frequency column, default to be frequency column output.

Input/output types:

input	output
list<any>	table

Examples

Compute a histogram of file types

> ls | histogram type

Compute a histogram for the types of files, with frequency column named freq

> ls | histogram type freq

Compute a histogram for a list of numbers

> [1 2 1] | histogram
╭───┬───────┬───────┬──────────┬────────────┬────────────────────────────────────────────────────────────────╮
│ # │ value │ count │ quantile │ percentage │                           frequency                            │
├───┼───────┼───────┼──────────┼────────────┼────────────────────────────────────────────────────────────────┤
│ 0 │     1 │     2 │     0.67 │ 66.67%     │ ************************************************************** │
│   │       │       │          │            │ ****                                                           │
│ 1 │     2 │     1 │     0.33 │ 33.33%     │ *********************************                              │
╰───┴───────┴───────┴──────────┴────────────┴────────────────────────────────────────────────────────────────╯

Compute a histogram for a list of numbers, and percentage is based on the maximum value